For a summer vacation that won't break the bank, BookIt.com's new Mexico and Caribbean all-inclusive resort sale offers some of the most affordable options around for a beach getaway.

How it works: Coupon codes -- BOOKIT100 (for 5-6-night stays) or BOOKIT200 (for 7+ nights) -- take an additional $100 or $200 off, respectively, on already-reduced prices. The resulting deals save up to 70%.

The codes work for travel any time through the end of the year, but summer offers the most bang for your buck. Prices start $178 per night (listed as $89 per person, before the promo code) at a 4-star Cancun resort; 4-star Punta Cana stays start at $198 ($99 per person).

Note: Prices, based on double occupancy, include all meals and drinks as well as taxes. For full details and to book, click below. The sale ends Friday.